M. Tsuji et al., METHANATION OF CO2 ON H-2-REDUCED NI(II) OR CO(II)-BEARING FERRITES AT 200-DEGREES-C, Journal of Materials Science, 29(23), 1994, pp. 6227-6230
The methanation of CO2 gas at 200 degrees C was investigated in Co(II)
or Ni(II)-bearing ferrites with substitution of up to 0.262 and 0.143
, respectively. The metal substitution in the ferrite facilitated the
methanation of the deposited carbon from CO2 gas in the H-2-reduced M(
II)-bearing ferrite in comparison with the reactivity of the H-2-reduc
ed magnetite with the same spinel structure. The effect on the reactiv
ity of methanation was found to be much larger in Ni(II)-substitution.
The degree of the effect increased with increases in the Ni(II)-subst
itution, while it remained about the same with increases in the Co(II)
-substitution. The maximum methanation (86.9%) of CO2 was attained in
the Ni(II)-bearing ferrite activated by H-2 gas for 3.0 h.